<template>
  <div>
    <div id="slider" class="mui-slider">
      <div
        id="sliderSegmentedControl"
        class="mui-scroll-wrapper mui-slider-indicator mui-segmented-control mui-segmented-control-inverted"
      >
        <div class="mui-scroll">
          <a
            :class="['mui-control-item',item.id==0?'mui-active':'']"
            data-wid="tab-top-subpage-2.html"
            v-for="item in PhotoList"
            :key="item.id"
            @tap="getList(item.id)"
          >{{item.title}}</a>
        </div>
      </div>
    </div>

    <!-- 图片区域 -->
    <ul class="phtolist">
      <router-link v-for="item in list" :key="item.id" :to="'/home/photoinfo/'+item.id" tag="li">
        <img v-lazy="item.img_url">
        <div class="info">
          <h1 class="info-title">{{item.title}}</h1>
          <div class="info-body">{{item.zhaiyao}}</div>
        </div>
      </router-link>
    </ul>
  </div>
</template>

<script>
// 1,导入mui的js文件
import mui from "../../lib/mui/js/mui.min.js";
import { Toast } from "mint-ui";

export default {
  data() {
    return {
      PhotoList: [],
      list: []
    };
  },
  created() {
    this.getPhotoList();
    this.getList(0);
  },
  mounted() {
    //当组件中的DoM结构被渲染好并放到页面中后,会执行这个钩子函数
    //如果要操作元素了,最好在mounted里面,因为,这里时候的DoM元素是最新的
    //2,初始化滑动控件
    mui(".mui-scroll-wrapper").scroll({
      deceleration: 0.0005 //flick 减速系数，系数越大，滚动速度越慢，滚动距离越小，默认值0.0006
    });
  },
  methods: {
    getPhotoList() {
      this.$ajax
        .get("/photolist/")
        .then(response => {
          console.log(response.data);
          this.PhotoList = response.data.message;
          var fist = {
            title: "全部",
            id: 0
          };
          this.PhotoList.unshift(fist);
        })
        .catch(error => {
          // console.log(error);
          Toast({
            message: "获取图片分类加载失败..."
          });
        });
      // 跨域测试
    },
    getList(data) {
      this.$ajax
        .get("/photo/", {
          params: {
            id: data
          }
        })
        .then(response => {
          // console.log(response.data);
          this.list = response.data.message;
        })
        .catch(error => {
          // console.log(error);
          Toast({
            message: "获取图片加载失败..."
          });
        });
      // 跨域测试
    }
  }
};
</script>

<style lang="scss" scoped>
* {
  touch-action: pan-y;
}
img[lazy="loading"] {
  width: 40px;
  height: 300px;
  margin: auto;
}
.phtolist {
  list-style: none;
  margin: 0;
  padding:10px;
  padding-bottom: 0;
  li{
    background-color: #cccccc;
    text-align: center;
    margin-bottom:10px;
    box-shadow: 0 0 9px;
    border-radius: 5px;
    position: relative;
    overflow: hidden;
    img {
      width: 100%;
      // margin: 0;
      // vertical-align: middle;
      
    }

    img[lazy="loading"] {
      width: 40px;
      height: 300px;
      margin: auto;
    }

    .info{
      padding-bottom: 5px;
      width: 100%;
      color: white;
      text-align: left;
      position: absolute;
      bottom: 0;
      background-color:rgba(0,0,0,0.4);
      max-height: 84px;
      .info-title{
        font-size: 14px;
        line-height: 20px;
      }
      .info-body{
        font-size: 13px;
              line-height: 20px;
      }
    }
  }
}


</style>
